PS3 Compatibility List - PS2 on PS3

Discussion in 'Compatibility List' started by STLcardsWS, Feb 17, 2015.

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    chicco33

    chicco33 Member

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    @kozarovv Is there any really chance to fixing Yakuza? If you say yes, I start to play the game from the start today and give you a save state before the freezing issue.
     
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    kozarovv

    kozarovv Super Moderator

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    I can't promise anything, no idea that issue is there. Anyway save will be useful, because i can now dump EE memory, and look for issue.
     
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    fovdj

    fovdj New Member

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    Hii guys.. sorry If I bothering.. Is there config file to FIX ACE COMBAT Games ??

    I looked at youtube where someone play ACE COMBAT Zero and 5 with PSCX2 with great Graphic...

    The link is :

    Can config file do same thing like that ??
     
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    kozarovv

    kozarovv Super Moderator

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    For now, only Ace Combat 4 is playable.
     
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    kozarovv

    kozarovv Super Moderator

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    bitsbubba, DEX357, mysis and 4 others like this.
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    Zar

    Zar Developer

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    @mysis Can you tell us what are these "hash/checksum/whatever_it_is" ?
     
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    ExData7

    ExData7 New Member

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    Onimusha Warlords and Onimusha 2 Samurais Destiny has slowdowns and flickering textures in at certain parts of the game. Onimusha 2 has a weird freeze at the last boss save point since that room also has the flickering textures problem, the game will freeze to a black screen sometimes when doing the elevator cutscene going down to the last boss. Is there a config to fix this? I can upload my save if anyones curios
     
    Last edited: Feb 12, 2018
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    sandungas

    sandungas Moderator Developer

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    The hash is some kind of CRC, mysis mentioned it explicitelly somewhere
    But well, when using the word "CRC" i guess is used as something generic, there are a lot of different ways to generate a CRC like that https://en.wikipedia.org/wiki/Cyclic_redundancy_check

    Basically it works by cummulating bytes of the Title_ID and summing them (or some other basic math operation)
    What we know is not very precise, because there are games with different Title_ID that returns the same CRC... also the one used here for PS3 is very short
    So cant be considered a security check because the precission is very low... is better to think in it as a safety check instead (a low accuracy check to be sure the data we are reading is correct)

    And... everytime i think in this it comes to mind other places of the PS3 firmware where are used this kind of CRC hashes (and are still unknown)... such inside the xregistry.sys
    Just throwing ideas incase someone wants to play with this and try luck to find the algorithm used to generate them ;)
     
    Last edited: Feb 12, 2018
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    chicco33

    chicco33 Member

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    Thank you so much. I can give you a save state for Yakuza until end of this week.
    Also is there any command to fix Tales of Legendia?
     
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    mysis

    mysis Developer

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    Yes, give me some time when i am at home :)
     
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    nanashi89

    nanashi89 New Member

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    Can anyone try to get Sega Soccer Slam to work, if they haven't tried already?
     
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    mysis

    mysis Developer

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    0x748975d9b5 SLUS_213.86
     
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    nanashi89

    nanashi89 New Member

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    Is this regarding Sega Soccer Slam?
     
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    mysis

    mysis Developer

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    No, Tales of
     
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    kozarovv

    kozarovv Super Moderator

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    What is the issue with that game?
    thx!
     
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    nanashi89

    nanashi89 New Member

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    Picture freezes and the music loops on the title screen.

    Sent from my SM-T280 using Tapatalk
     
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    Zeonis

    Zeonis Member

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    Star Ocean: Till The End of Time has audio glitching. Also could someone make a config for Tales of Legendia?
     
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    Guillermo.9

    Guillermo.9 New Member

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    I have a problem with the PS2 game True Crime NYC Slus21106.
    I have this game in my PS3 Slim in ISO (not Pkg or ps2classic).
    The game freezes when i use the elevator,Is there a solution?
    Maybe is mY PS2 .CONFIG.
    Thanks and sorry for the bad English.
     
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    kozarovv

    kozarovv Super Moderator

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    0x0E = Improve ADD/SUB accuracy for selected opcode
    0x26 = Improve ADD/SUB accuracy for selected memory range

    Confirmed in Rygar, and ToTA.
    Edit: In netemu.

    Edit2: Following this find, correct config for ToTA is:
    Code:
    00000000  3D 00 00 00 65 3D 00 00 0E 00 00 00 FC FF 27 00  =...e=......ü˙'.
    00000010  0E 00 00 00 F4 21 29 00 00 00 00 00              ....ô!).....
    Although old config should work fine like current one. This is just proper way.
     
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    sandungas

    sandungas Moderator Developer

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    Great, i guess we need to update that table in talk page in wiki :)
    Initially i marked that ones as "find and replace" but was just a way to add some info in them to difference them from the others (and marked them in orange in the table)

    There are another 2 commands marked in orange in the table, because the data stored in them did look to follow the same rules like the ones you are mentioning, now you have the proper names of this ones... im guessing the others are going to work pretty similar
    The difference maybe is the others are going to be used to decrease ADD/SUB accuracy :)

    If this im saying is right... it could be something useful to reduce the workload... to fix some some games with lag
     

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